Improvement in trip-hammers and anvil-stocks



` Toall'whomt may concern:

0 H IGGiN Si. OF-

sKoWnne-AN, MAINE.

` "Letters Pagano. 108,023, 1aed october 4, 1870.

,gw-g.

`l,llllPRovrsMeN-r, INY TRIP-HAMMERs- AND ANvlL-srocics.

The Schedule `referred to tu these Lettersiatent and part of tlgeame Be. it known `that I, JOHN C. HIGGINS, of Skowhegan,`1n`the county of Somerset and State of Maine,

have inventedfa new and `valuable Improvement inl `the` I)ie-stoclrs of Trip-Hammers'and Anvils'; and I do herebyr declare"that thefollowing is a full, cle-ar,

and `exact description `of the construction; and opera.

tion of the same, reference being had tothe annexed i. drawing making-a part. of this specification and to thev Yletters andzigures of `reference marked thereon. l f Figure l: of the Ydraiwing is a `representation of'a `,longitudinal vertical section ofy my -improved -t'riphammer head.

Figure 2 is a bottom view ofthe same with vdies in. place.

` Figure-3 isafvertieal section ofrmy improved anvil-stock.

" Figures 4, 5, 6, 7,

l 4 and-8 are details` My invention relates to improvements in tri'phainmers snit-ablefor the manufacture of axesyhatchets,

" and other-"tools, `and consists in certain improvements in the head `of the Vtrip-ha'm`n-1er, and inthe anvilstock, whereby they are adapted to hold securely vthe `diif'e'rentidies employed'to give the requisite shape and finish to the various parts of the' tool; 4also in` an iin-A provement in the head of the trip-hammer, whereby `it is prevented from slipping' backward or forward in the hoops -whereby it is attached tothe handle.

The letter-A of the drawing represents the handle 4or lever to .which the head B is attached.

I A notch,'0, is made in the upper part of the head to receive a`key,vD, whereby the slipping ofthe head back andv forth in the fastening-hoops E' is prevented. In the under part orvface of the head are formed certain tapering channels to receive thedies. "Iwo of i i these channels, F F, extendrtransversely across Athe face of the head at each end. They are designed to be slightly dovetailed, to give` greater security tothe wedgesGrG,whicl1`are inserted ,atthe sides ofA the dies jgbut the incliuationis only upon thatwall of each channel which lies adjacent to the wedge therein placed. ,s i 'A Extending lengthwise` in the-face of jthe head is the v tapering channel H, made i. somewhat larger than the cross-channels, vand provided with an` inclined wall to secure the dovetailed wedge K at the side of 4the die I a therein placed. l l

In order that Athe wedges may not interfere, the bed of the central channel His somewhat depressed be low the -level of theheds 'of the transverse grooves. It isV usually madeeven with `the lower edges of the i onterwalls of these channels.

' The cross-dies rst having been secured in position,l

`the central 'or main die is fastened by driving they y y wedge Kinto'itsseat, through a suitable opening, L,

inthe body ofthe cross-die f at the wide endof theV channel H.' Y

j M represents the lowerdie-stock or. anvil, provided with central channel 'N and transverse channels `P Q, the beds of the latter being below thelevel of the bed of the former, for 'reasons similar to those above' de- `scribed," in connection with the head of the hammer.

Sdesignates -the lever, designed to hold the com-' pressing-die. It-'is provided with a similar tapering channel, T, in which the die is. secured by awedge.

It is operated by a lever extending. out at right angles to the' handle V. Y 'In the formation of an axe this'compress is used to. prevent the spreading of the eye during the squaring of the back. i

Lugs nu are formed at the corner of the anvil, and are designed to receive the journals of the .prop or catch I, whichzsupp'orts the weight ol' thesharnmery lwhen not in operation, and prevents the faces of the upper and under dies fromcoming together when -thereis nothingbetween them.

. The anvil-stock above described is used in all cases wherethenpsettingof the head is required. l

When 'this is"1`1ot the case, the common anvil-stock `O may be employed, andthecross-dies secured in the recess of Y thevplate Z, as shcwn at fig. 5 of the drawmg. 5 v

' Instead'of wedging the .dies into their seats inde-V fpendently, the cross-dies may heainade to- 't' their channels, and all the diescan then be secured by the 'long wedge'K What I claim as myinventiomand desire to secure by Letters Patent, is'- 1..'Ihe `trip-liammier head herein described, projvided.with-notch Gand key D, longitudinal channel H, and-transverse channels F F, having their beds at l different levels, and otherwise arranged, als described, so that lthe dies can be secured in their seats by separate wedges, or -all fastened by a single wedge, as'VV specified. y l

2. Theanvil-stock hereindescribed, having compressing lever S, slotQ, and Acatch I, longitudinal and transverse channels N1 l), having their beds at dierent levels, and adapted; to hold the lower dies in place, in the manner'and for the purposes specified. A

3'. In combination with. the transverse yand longi-l tudinal dies', the wedge and plate Z, for securing them in positionl in the/slot of a common anvil, as specified.

l In testimony that I claim the above, I have here-v yunto subscribed my name in the presence of two Witnesses.

.Witnesses JAMES BELL, l WeB. Numan.

JoHN c; HIGGINS. 

